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Topic: Civil 3d is not HotWheels Approved (Read 5999 times)

To my hearts discontent, I am unable to resurrect nostalgia, and build that loop-d-loop I dreamed so much about. I pontificate, is Civil 3d really 3d, or just an illusion of 3d. Should we have all taken the other pill?

The concept of having a 2D Alignment and 2D Profile designed within the confines of a 2D Profile View, which combined, represent a 3D Vertical Alignment, leaves a lot to be desired.

Especially, as compared to that of a single 3D entity (NURBS? I 'spose Feature Line will do) which can provide both horizontal, vertical, and station information and be 'extruded' upon by a given typical section to produce a corridor.

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"How we think determines what we do, and what we do determines what we get."

The concept of having a 2D Alignment and 2D Profile designed within the confines of a 2D Profile View, which combined, represent a 3D Vertical Alignment, leaves a lot to be desired.

Especially, as compared to that of a single 3D entity (NURBS? I 'spose Feature Line will do) which can provide both horizontal, vertical, and station information and be 'extruded' upon by a given typical section to produce a corridor.

It can be done using standard autocad 3d primitives...the disillusionment is when the stock c3D tools fail miserably.However after seeing why and deconstructing how it failed, the trick was derived from the failure.

It would be more apparent in a tunnel instance.However part of the 'trick' is to not create surfaces that overlap.... even with the loop the loop there is a trick to create surfaces with no overhangs or overlapsand to compensate for alignments not wanting to double back on themselves stationing-wise

Oh and creating the points along a 10X vertical scaled circular profile...